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Solubility of 1‐hexene in LLDPE synthesized by (2‐MeInd) 2 ZrCl 2 /MAO and by Mg(OEt) 2 /DIBP/TiCl 4 –TEA
Author(s) -
Jin HyoungJoon,
Kim Sewon,
Yoon JinSan
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10418
Subject(s) - 1 hexene , solubility , hexene , metallocene , catalysis , natta , chemistry , polymer chemistry , homogeneous , hildebrand solubility parameter , materials science , organic chemistry , thermodynamics , polymerization , polymer , ethylene , physics
Abstract The solubility of 1‐hexene was measured for linear low‐density polyethylenes (LLDPEs) produced over a heterogeneous Ziegler–Natta catalyst, Mg(OEt) 2 /DIBP/TiCl 4 –TEA (ZN), and over a homogeneous metallocene catalyst, (2‐MeInd) z ZrCl 2 –MAO (MT). The 1‐hexene solubility in LLDPEs was well represented by the Flory–Huggins equation with a constant value of χ. ZN–LLDPEs dissolved a larger amount of 1‐hexene and thus showed a lower value of χ compared to MT–LLDPEs. The Flory–Huggins interaction parameter χ, or the solubility of 1‐hexene at a given temperature and pressure, was suggested as a sensitive measure for the composition distribution of LLDPEs. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 1566–1571, 2002; DOI 10.1002/app.10418